131121111320 has 32 divisors (see below), whose sum is σ = 295033162320. Its totient is φ = 52446549120.

The previous prime is 131121111301. The next prime is 131121111379. The reversal of 131121111320 is 23111121131.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1724915 + ... + 1799325.

Almost surely, 2^131121111320 is an apocalyptic number.

131121111320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131121111320 is an abundant number, since it is smaller than the sum of its proper divisors (163912051000).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131121111320 is a wasteful number, since it uses less digits than its factorization.

131121111320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118475 (or 118471 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 17.

Adding to 131121111320 its reverse (23111121131), we get a palindrome (154232232451).

The spelling of 131121111320 in words is "one hundred thirty-one billion, one hundred twenty-one million, one hundred eleven thousand, three hundred twenty".